The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 25, 1989
Filed:
Oct. 21, 1986
Applicant:
Inventor:
Toshio Sakane, Sagamihara, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
12866106 ; 12866301 ;
Abstract
A cornea thickness measuring ultrasonic probe is provided with an ultrasonic wave propagation layer being in contact with an eye to be examined and formed substantially concentrically with the center of curvature of the cornea of the eye to be examined, a plurality of ultrasonic wave vibrators are disposed on at least one meridian, and a fixation light source is presented to the eye to be examined.